Pipe-vise.



S. M. KASS.

PIPE VlSE.v

APPLHIATION FILED JUNE 16. I916.

Patented Aug. 14, 1917.

Inventor.

y Alforney.

UNITED STATES PATEN T OFFICE.

SAMUEL M. KASS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWOFIFTI-IS TO HARRY E. LATHAM.

PIPE-VISE.

Application filed June 16, 1916.

To all whom it may concern:

Be it known that I, SAMUEL M, lines, a citizen of the United States, residing in Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Pipe-Vises, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

The invention to be hereinafter described relates to pipe vises of the class in which a chain is employed in connection with a clamping jaw to grip and hold the pipe or similar article while it is being tooled or otherwise treated; and the invention has for its object to provide a device of this character which shall be simple in construction and convenient and eifective in operation.

With the above generally-stated object in view, an important feature of the present invention consists in providing a base with a jaw which may be preferably serrated or toothed, and pivotally connecting said jaw at one end with the base and providing a wedge and means for operating it for insinuating the wedge beneath the free end of the jaw to raise the free end of the jaw and the pipe sustained on it into clamping engagement with the chain, one end of which is secured to the base at one side of the pipe and the other end of which is secured to the base at the other side of the pipe. These features of the invention and the preferred form thereof will best be made clear from the following description and accompanying drawings of a good, practical embodiment of the invention.

Referring to the drawings :The base portion 1 may be formed of suitable material, and in view of the work to be done by the vise, this may preferably be of metal. Rising from the base 1 are the lugs or flanges 2 which may be formed with the base or secured thereto, in parallel separated relation, as shown. These lugs or flanges 2 preferably extend some distance across the base and provide guiding means, as will hereinafter be made clear, for clamping the jaw and, it may be, also for a sliding wedge which operates the jaw.

Specification of Letters Patent.

Patented Aug. 14, 1917. Serial No. 104,100.

Pivotally mounted between the lugs or flanges 2 is the jaw, which in the present form of the invention, comprises two jaw members 3 pivoted on a suitable supporting pivot or stud 4:. Each of the jaw members 3 has a concaved serrated toothed portion 5 which is usual in various forms of jaw pipe vises, and these teeth serve to prevent the pipe from turning while it is being treated.

The jaw members 3 are held in parallel separated relation by any suitable means such as the end cross-piece 6 and by the lugs 7, 7 at the opposite end of the jaw members, said lugs being preferably secured to and between the jaws and formed as the temporary securing means for the clamping chain 8, one end 9 of which is permanently secured to the base 1 between the jaw members by suitable means such as a bolt 10, the construction being such that when a pipe is placed upon the concaved toothed surface of the jaw members, it is engaged by these jaw members at a plurality of points in its length, and between these points the clamp ing chain 8 is passed over the pipe for holding it seated on the jaw members.

Mounted for sliding movement on the base 1 and preferably inclosed between the lugs or flanges 2, is the block 11 having the wedge portion 12, one for each j aw member, the construction being such that when the block 11 is moved in a direction longitudinally of the jaw members the incline or wedge-shaped end portion 12 will be forced beneath the free ends of the jaw members and cause the jaw members to tightly bind or clamp the pipe between themselves and the chain 8, as will be readily understood.

The form of the wedge or incline portion 12 of the block 11 may be varied, but it is found convenient in the present form of the invention to supplement the incline or wedge portions 12 of the block in their effective action by rounding the free end portions of the jaw members as at 13 so that when the wedge is moved longitudinally of the jaw members its incline portion will readily insinuate itself beneath the free ends of the jaw members and effect the desired clamping action.

The block 11 as hereinbefore noted, is preferably mounted between the lugs or flanges 2 and guided thereby for its described longitudinal movement, suitable means being provided for imparting such movement, one form of which will now be described.

The-lugs orflanges 2 are connected at one end in the illustrated form of the invention by a cross-piece 14: through which is threaded the adjusting device or screw 15,

the end 16 of which is rotatably connected to the block 11. The adjusting screw 15 may be operated or turned by the thumbpiece 17, the construction being such that by rota-tire movement of the adjusting screw 15,. the block and perforce the wedge, carried by it, or formed: integral with it, will be moved. in a direction longitudinally of the jaw members 3 and. serve as they move toward such jaw members to lift the free ends thereof iorcibly upward to thereby clamp the pipe between the: plurality of points where it: is supported by the jaw members and the overlying. chain.

It. will be understood, of course, that changes may be made in some of the details ofthe invention. without departing from the true scoperthereof, as pointed out in the claims, as" for instance, the chain. securing parts: 7 may be either secured to the base 1 or they may be formed upon a block. secured to the jaw members 3 near their pivotal mounting on the flanges or lugs 2. Other changes: may suggest themselves to those skilled in the art.

It may, also, at times, be desirable to reduce the sliding friction between. the wedge 12' and the jaw members 13 as the block 11 is adjusted to raise the; and to this end the anti-friction rollers 18- may be mounted either on the wedge. in suitable cavities providedtherefor, or on the front portions of the jaw members 3,. the construction being such that as the wedge is agitated, the. antifrictionroller reduces the frictional engagement of these parts.

\Vhere the lugs 7 are secured to the jaw members 3 as they would be in the preferred form' of construction, it is evident-that when the jaw members are: lifted by the wedge the chain itself where it is secured to the lug '7, is moved downward with the result that there is a double clamping action, one by the jaw members and the other by the chain, bothbeing efl'ected by the wedge movement.

What is claimed is 1. In a pipe vise, the combination of a base, a jaw' pivotally connected to the base at one end portionoi the jaw and free for movement at its other endin a plane passing trans\ 'ersely of the pivot, a cl iain secured at one end to the base andadapted to pass over a pipe placed upon the jaw and be detachably connected to the base for movement transversely of the pivotal axis of the jaw,

a sliding block mounted on the base and having a wedge-shaped portion, and. means for adjusting; the block on. the base and the wedge-shaped portion under the free end of the jaw to tilt the jaw about its pivot and clamp the pipe between the chain and jaw.

2; In a pipe vise, the combination of a base having lugs projecting therefrom, a serrated or toothed jaw for supporting a pipe pivotally mounted at one end between said lugs and guided thereby in its pivotal movement, chain secured to the base at one side of the pipe supported by the pivoted jaw and adapted; to be detachably connected to the base at the opposite side of the pipe, a block having the inclined or wedge-shaped end adjacent the free end of the jaw and guidedi by said lugs for movement in a: direction longitudinally of the jaw, and an adjusting device for moving the block and forcing the. inclined or wedge-shaped. end under the free end: of the jaw.

3. In a pipe vise, the combination of a base having separated lugs: or' flanges eX- tending therefrom, a clamping jaw comprising a. plurality of parallel pipe-engaging members pivoted at one end: to thebase and laterally separated to support a pipe at different points of its length, a. chain secured to the base at one side of a pipe seated on the jaw members, means for detachably securing the chain at the opposite side of the pipe, at block guided for movement longitudinally of the aw members. toward and from the pivot ot the aw and having an inclined portion for engaging and moving the free ends of the jaw members about their pivotal connection. with: the base, and an adjusting device for moving theblock.

t. In a pipe vise, the combination. of. abase having separated lugs or flanges extending therefrom, a clamping jaw comprising a plurality of movable parallel. pipe engaging members pivoted at one end to the base and laterally separated tosupport a pipe at different points of its length, each of said jaw members having rounded free end portions, a chain secured -to the base at one side of a pipe seated on the jaw members, means for detachably securing the chain: at the opposite side" of the pipe, ablock guided for movement longitudinally of the jaw members and having an inclined portion: for engaging and moving the free ends of the jaw members about their pivotal connection with the base in a plane passing transversely through the jaw pivot, and an. adjusting device for moving the block in a straight path.

5. In a pipe vise, the combination ot a base having parallel l-ugsor flanges projecting therefrom, a jaw pivotally mounted at one end' between said lugs or flanges and comprising two parallel: jaw members guided by said lugs or flanges as the jaw is turned about its pivot, a chain secured to the base between the jaw members at one from the said base and clamping a pipe beside of a pipe supported on said jaw memtween the chain and, jaw members, and hers, means for detachably securing another means for sliding the block. 10 part of the chain at the opposite side of the In testimony whereof, I have signed my 5 pipe, a block movable longitudinally of the name to this specification.

jaw members and having inclined portions for raising the free ends of the j aw members SAMUEL M. KASS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

